CN218569084U

CN218569084U - Battery module

Info

Publication number: CN218569084U
Application number: CN202222975494.8U
Authority: CN
Inventors: 蒋怀玉; 许文倩
Original assignee: Xiamen Hithium Energy Storage Technology Co Ltd
Current assignee: Xiamen Hithium Energy Storage Technology Co Ltd
Priority date: 2022-11-08
Filing date: 2022-11-08
Publication date: 2023-03-03
Anticipated expiration: 2032-11-08

Abstract

The utility model discloses a battery module, include: the shell is provided with two oppositely arranged side plates, the two side plates are connected through a reinforcing piece, and one side of at least one side plate, facing the other side plate, is provided with an inserting groove; the single battery is arranged inside the shell; the plug connector is perpendicular to the thickness of the side plate direction and is larger than the depth of the slot, and the plug connector can be plugged into the slot to apply extrusion force to the single battery. According to the battery module provided by the embodiment of the utility model, the plug connector is plugged into the slot, the plug connector can apply extrusion force to the battery monomer, so that the assembly of the battery module is realized, meanwhile, the service life of the battery module can be prolonged after the battery monomer is subjected to certain extrusion force, the assembly is more convenient, a tool clamp is not required to be customized, the subsequent screw fastening is not required, the processing and assembly cost is reduced, the assembly process is reduced, and the assembly efficiency is improved; and more battery monomers can be accommodated in the shell with a certain size, so that the energy density of the system can be improved, and the cost of the system can be reduced.

Description

Battery module

Technical Field

The utility model relates to a battery technology field particularly, relates to a battery module.

Background

Among the correlation technique, the installation of battery module is usually to adopt the electric core of assembling to weld with both sides curb plate after the both sides end plate extrusion, or tie up with rolling the area behind the electric core of assembling through the both sides end plate extrusion, fixes in the casing through the screw installation at last and constitutes big module, and this kind of mounting means needs customization frock clamp, and anchor clamps preparation is complicated, has increased the processing cost, and the installation back module energy density is on the low side, has the space of improvement.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, an object of the utility model is to provide a battery module, battery module need not customization frock clamp, and simple to operate has reduced assembly cost.

According to the utility model discloses battery module, include: the shell is provided with two oppositely arranged side plates, the two side plates are connected through a reinforcing piece, and one side of at least one side plate, facing the other side plate, is provided with an inserting groove; the battery monomer is arranged inside the shell; the plug connector is perpendicular to the thickness of the side plate direction and is larger than the depth of the slot, and the plug connector can be plugged into the slot to apply extrusion force to the single battery.

According to the embodiment of the utility model, through setting up the slot on the curb plate, when the battery monomer is installed to the casing, through pegging graft the plug connector to the slot in, make the plug connector can exert the extrusion force to the battery monomer, realize the assembly of battery module, can improve the life of battery module after the battery monomer receives certain extrusion force simultaneously, compare and tie up and connect the back and install to the casing through the fastener in the battery monomer welding, the assembly of this embodiment is more convenient, need not to customize frock clamp etc. and need not follow-up screw fastening, the processing assembly cost is reduced, reduce the assembly process, improve assembly efficiency; and more battery monomers can be accommodated in the shell with a certain size, so that the energy density of the system can be improved, and the cost of the system can be reduced.

In some examples, the side plate is provided with at least two ribs protruding out of the side plate, the slot is defined between two adjacent ribs, and the depth of the slot is the height of the rib protruding along a direction perpendicular to the side plate.

In some examples, each side plate is provided with at least one slot.

In some examples, the slots on the two side plates are the same in number and are oppositely arranged.

In some examples, the plug connector forms a plug strip, the outer surface of the plug connector is matched with the shape of the slot, the thickness of the plug strip, which is perpendicular to the direction of the side plate after being inserted into the slot, is larger than the depth of the slot, and the plug strip can be inserted into the slot to apply extrusion force to the single battery.

In some examples, at least one end of the plug is formed with a guide portion in an extending direction of the plug, the guide portion being gradually reduced in a sectional dimension of the vertical side plate in a direction approaching the one end.

In some examples, the guide portion has a guide surface extending obliquely.

In some examples, the reinforcing member includes a plurality of reinforcing members, the plurality of reinforcing members divide the space between the two side plates into a plurality of mounting areas, at least one battery cell can be mounted in each mounting area, and at least one slot corresponds to each mounting area.

In some examples, a plurality of single cells are arranged in each mounting area, and the plurality of single cells in each mounting area are arranged along the thickness direction of the single cell, which is the same as the arrangement direction of the two side plates.

In some examples, the housing further has a bottom plate, a top plate, and end plates, the bottom plate and the top plate are disposed on both sides of the two side plates in the width direction, the extending direction of the insertion groove is the same as the width direction of the side plates, and the end plates are disposed at the ends of the two side plates.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural view of a battery module according to an embodiment of the present invention;

fig. 2 is a schematic view of a partial structure of a battery module according to an embodiment of the present invention;

FIG. 3 is an enlarged view of the structure A of FIG. 2;

FIG. 4 is a schematic view of a plug connector according to an embodiment of the present invention;

fig. 5 is an exploded view of a battery module according to an embodiment of the present invention.

Reference numerals are as follows:

the battery module 100 is provided with a plurality of battery cells,

the casing 10, the mounting area 101, the side plate 11, the bottom plate 12, the top plate 13, the end plate 14, the reinforcing member 15, the rib 16, the insertion groove 161,

the battery cell (20) is provided with a battery,

the plug-in connector 30, the guide surface 31,

and a heat dissipation plate 40.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

A battery module 100 according to an embodiment of the present invention is described below with reference to fig. 1 to 5.

As shown in fig. 1 to 5, a battery module 100 according to an embodiment of the present invention includes: casing 10, battery monomer 20 and plug connector 30, casing 10 has two mutual disposition's curb plate 11, two curb plates 11 pass through reinforcement 15 and connect, be equipped with slot 161 on one curb plate 11, or all set up slot 161 on two curb plates 11, slot 161 opens towards one side of another curb plate 11, battery monomer 20 can install inside casing 10, plug connector 30 can peg graft to in the slot 161, and because slot 161 one side is open, and on the direction (the left and right directions as shown in fig. 3) of perpendicular curb plate 11, the thickness of plug connector 30 is greater than the degree of depth of slot 161, therefore, some of plug connector 30 can bulge slot 161, and then when battery module 100 assembles, install battery monomer 20 between two curb plates 11, rethread installation plug connector 30, or peg graft plug connector 30 in slot 161, install battery monomer 20 between two curb plates 11 again, plug connector 30 can exert certain extrusion force to battery monomer 20, can realize battery monomer 20's fixed.

According to the utility model discloses battery module 100, through setting up slot 161 on curb plate 11, when battery monomer 20 is installed to casing 10, through pegging graft plug connector 30 to slot 161 in, make plug connector 30 can exert the extrusion force to battery monomer 20, realize the assembly of battery module 100, battery monomer 20 can improve battery module 100's life after receiving certain extrusion force simultaneously, compare in battery monomer 20 welding tie up install to casing 10 in through the fastener after connecting, the assembly of this embodiment is more convenient, need not to customize frock clamp etc. need not follow-up screw fastening, processing assembly cost is reduced, reduce assembly process, improve assembly efficiency; and more battery cells 20 can be accommodated in a case 10 of a certain size, so that the energy density of the system can be increased and the cost of the system can be reduced.

As shown in fig. 3, according to some embodiments of the present invention, a plurality of ribs 16 are provided on the side plate 11, the rib 16 protrudes out of one side surface of the side plate 11 toward another side plate, two ribs 16 are adjacently arranged, a slot 161 is defined between two adjacent ribs 16, the rib 16 can extend along a straight line, thereby a slot 161 with a socket at both ends can be formed between two ribs 16, the depth of the slot 161 is the height of the rib 16 protruding out of the side plate in the direction perpendicular to the side plate, the connector 30 can be inserted from one end of the slot 161, i.e., the connector 30 can be installed between two side plates 11 at the battery cell 20, the connector 30 can be inserted into the slot 161 from one end of the slot 161, meanwhile, a part of the connector 30 protrudes out of the slot 161 toward the battery cell 20, the connector 30 can be directly abutted against the battery cell 20, and can also be abutted against structures such as 40 that are provided outside the battery cell 20, because the thickness in the side plate direction is perpendicular to be greater than the depth of the slot, thereby the connector 30 can directly or indirectly exert a certain extrusion force on the battery cell 20, and the fixation of the battery cell 20 is realized.

Of course, the side plate 11 may also be formed with the slot 161 by surface depression, so that it is not necessary to additionally process the rib 16 on the side plate 11, and meanwhile, the slot 161 may also extend to the edge of the side plate 11 along the up-down direction, so as to form sockets at two ends of the slot 161, so as to facilitate the plug-in assembly of the plug 30.

As shown in fig. 2 and 5, according to some embodiments of the present invention, each side plate 11 is respectively provided with a slot 161, and when a single battery 20 or a row of single batteries 20 is disposed in the battery module 100, each side plate 11 may be provided with a slot 161, and the two plug connectors 30 apply a pressing force to the single battery 20 therebetween, and of course, each side plate 11 may also be provided with a plurality of slots 161; when being equipped with multirow battery monomer 20 in battery module 100, every row can include one or more battery monomer 20, be equipped with a plurality of slots 161 that correspond with the row number at least on every curb plate 11, in order to guarantee to exert certain extrusion force to every row of battery monomer 20, preferably, can set up two slots to a plurality of battery monomers that every row of is constituteed, because if one row only sets up a slot, the plug connector has the extrusion force too concentrated to the battery monomer of looks butt joint, can cause the extrusion force to distribute unevenly to the battery monomer, there is the hidden danger in the use of battery monomer.

In some specific examples, the slots 161 on the two side plates 11 are the same in number and are arranged at opposite positions, so that opposite pressing forces can be applied to two sides of any row of the battery cells 20, and the applied pressing forces can be controlled conveniently.

In addition, the slot 161 may be provided only on one side plate 11, and the battery cell 20 directly abuts against the other side plate 11, or the heat dissipation plate 40 abuts against the other side plate 11, so that the plug-in connector 30 is provided only on one side of the battery cell 20 to pressurize the battery cell, thereby simplifying the assembly process and improving the assembly efficiency; meanwhile, more battery cells 20 can be accommodated in the case 10 with a certain size, so that the energy density of the system can be improved, and the system cost can be reduced.

As shown in fig. 4 and 5, according to some embodiments of the present invention, the plug 30 forms a slip, for example, the slip can extend along the height direction (the up-down direction shown in fig. 5) of the battery cell 20, the outer surface of the plug 30 matches with the shape of the slot 161, for example, the slot 161 is a rectangular slot, the cross section of the plug 30 is formed in a square shape, and the plug 30 can be tightly attached to the slot 161, so as to improve the stability of the plug 30 after being inserted in place, and avoid the influence of the movement of the plug 30 on the extrusion force and stability of the battery cell 20.

In some examples, the plug 30 extends in the up-down direction, the plug 30 can be inserted into the slot 161 in the up-down direction, at least one end of the plug 30 is formed with a guide portion, the guide portion is of a variable cross-section design, the cross-section is perpendicular to the surface of the side plate 11, for example, the lower end of the plug has a guide portion, the cross-sectional dimension of the guide portion is gradually reduced from the top to the bottom, and by the above design, the insertion of the plug 30 into the slot 161 can be facilitated, and the convenience of assembly can be improved. The guide part can also be in a conical and truncated cone-shaped structure.

As shown in fig. 4, in some specific examples, the outer surface of the guide portion has a guide surface 31, and the guide surface 31 extends in a direction oblique to the extension direction of the connector, so that the guide portion has a variable cross-section structure, and when the connector 30 is inserted into the slot 161, the guide surface 31 is designed to reduce the collision scratch and the like to the internal structure of the battery module 100, thereby improving safety and stability.

As shown in fig. 5, according to some embodiments of the present invention, a plurality of reinforcing members 15 are disposed between two side plates 11, and the reinforcing members 15 may be strip-shaped reinforcing ribs, so that the size of the reinforcing members is reduced and the weight is reduced on the basis of ensuring the connection reinforcement function, so as to satisfy the lightweight design requirement of the battery module 100.

The reinforcing members 15 may divide the space between the two side plates 11 into a plurality of mounting regions 101, thereby forming a plurality of rows of spaces, so that a plurality of rows of batteries may be mounted in the battery module 100, wherein one battery cell 20 may be mounted in each mounting region 101, or a plurality of battery cells 20 may be mounted, and each mounting region 101 corresponds to at least one slot 161, thereby applying a certain pressing force to each row of battery cells 20.

It can be understood that one or more reinforcing members 15 are arranged between two adjacent mounting areas 101, and the plurality of mounting areas 101 are divided by the plurality of reinforcing members, so that the stability between the two side plates 11 can be improved, and the situation that the battery deforms after long-term use and the like affects the pressing force of the plug connector 30 on the battery single body 20 is avoided.

As shown in fig. 2, in some examples, a plurality of battery cells 20 are disposed in each mounting area 101, the plurality of battery cells 20 in each mounting area 101 are arranged along a thickness direction (left and right directions as shown in fig. 2) of the battery cells 20, where the thickness direction of the battery cells 20 is the same as the arrangement direction of the two side plates 11, when the battery module 100 is assembled, the battery cells 20 are sequentially placed into the housing 10 according to a required arrangement sequence, and then are assembled with the slots 161 on the side plates 11 through the connectors 30, and the battery cells 20 are pressed by the connectors 30 and the side plates 11, so that the battery cells 20 and the battery cells 20 are stressed with each other, and not only the stress during the use of the battery cells 20 is satisfied by a certain pressing force, but also the fixation of the battery cells 20 in each direction is satisfied, and no additional screw fixation is required, thereby improving the assembly efficiency.

It can be understood that, in each mounting region 101, a heat dissipation plate 40 may be disposed between two adjacent battery cells 20, a heat dissipation plate 40 is also disposed between the battery cell 20 and the side plate 11, the heat dissipation plate 40 may perform a heat dissipation function on the battery cell 20, and the plug connector 30 may abut against the heat dissipation plate 40 to achieve the extrusion on the battery cell 20. Of course, two adjacent single batteries 20 can also be directly abutted, the single batteries 20 can be directly abutted with the plug connectors 30, and at this time, the bottom of the single battery 20 can be provided with a heat dissipation structure to meet the heat dissipation requirement of the battery.

As shown in fig. 5, according to some embodiments of the present invention, the housing 10 further has a bottom plate 12 and a top plate 13, the bottom plate 12 and the top plate 13 are disposed on two sides of the side plate 11 in the width direction (the up-down direction shown in fig. 5), the extending direction of the slot 161 is the same as the width direction of the side plate 11, and thus the bottom plate 12 and the top plate 13 can be respectively located at two ends of the slot 161, so that when the plug 30 is plugged into the slot 161, the top plate 13 and the bottom plate 12 can play a role of plugging the end of the slot 161, and the plug 30 is prevented from being separated from the end of the slot 161 during the long-term use of the battery module 100, that is, the top plate 13 and the bottom plate 12 play a role of protecting the plug 30 of the battery cell 20.

In some examples, the housing 10 further has end plates 14, the end plates 14 are disposed at the ends of the two side plates 11, and the end plates 14 are connected with the side plates 11, the bottom plate 12 and the top plate 13 to realize the connection of the entire housing 10.

Other configurations and operations of the battery module 100 according to the embodiment of the present invention are known to those of ordinary skill in the art and will not be described in detail herein. The vertical direction, the horizontal direction, and the front-rear direction are based on the vertical direction, the horizontal direction, and the front-rear direction of the figure.

In the description of the present invention, unless otherwise expressly specified or limited, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features through another feature not directly in contact. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A battery module, comprising:

the shell is provided with two oppositely arranged side plates, the two side plates are connected through a reinforcing piece, and at least one side plate is provided with an inserting groove which is opened towards one side of the other side plate;

the single battery is arranged inside the shell;

the plug connector is plugged into the slot, the thickness of the plug connector in the direction perpendicular to the side plate is larger than the depth of the slot, and the plug connector can be plugged into the slot to apply extrusion force to the single battery.

2. The battery module according to claim 1, wherein the side plate is provided with at least two ribs protruding from the side plate, the slot is defined between two adjacent ribs, and the depth of the slot is the height of the rib protruding in the direction perpendicular to the side plate.

3. The battery module according to claim 1, wherein at least one slot is formed in each side plate.

4. The battery module according to claim 3, wherein the slots on the two side plates are the same in number and are oppositely arranged.

5. The battery module according to claim 1, wherein the plug member forms a plug strip, the outer surface of the plug member matches the shape of the slot, the thickness of the plug strip in the direction perpendicular to the side plates after being inserted into the slot is greater than the depth of the slot, and the plug strip can be inserted into the slot to apply the extrusion force to the battery cell.

6. The battery module according to claim 5, wherein at least one end of the plug member is formed with a guide portion in an extending direction of the plug member, the guide portion being gradually reduced in a direction approaching the one end in a sectional dimension perpendicular to the side plate.

7. The battery module according to claim 6, wherein the guide part has a guide surface extending obliquely.

8. The battery module according to claim 1, wherein the reinforcing member includes a plurality of reinforcing members, the plurality of reinforcing members divide the space between the two side plates into a plurality of mounting areas, at least one battery cell is mounted in each mounting area, and at least one slot is corresponding to each mounting area.

9. The battery module according to claim 8, wherein a plurality of the single batteries are arranged in each mounting region, the plurality of the single batteries are arranged in each mounting region along a thickness direction of the single batteries, and the thickness direction of the single batteries is the same as the arrangement direction of the two side plates.

10. The battery module according to any one of claims 1 to 9, wherein the case further has a bottom plate, a top plate, and end plates, the bottom plate and the top plate are provided on both sides in the width direction of the two side plates, the insertion grooves extend in the same direction as the width direction of the side plates, and the end plates are provided at the ends of the two side plates.